010-低?撼商譭nglish(doc)
Ref . No. CNCA-01C-010:2001 IMPLEMENTATION RULES FOR COMPULSORY CERTIFICATION OF ELECTRICAL AND ELECTRONIC PRODUCTS Low-voltage switchgear assembly Announced on Dec.7, 2001 Implemented on May 1,2002 Certification and Accreditation Administration of People’s Republic of China Contents 1.Scope 3 2. Certification model 3 3. Major processes for certification 3 3.1Application for certification 3 3.2Type testing 3 3.3Initial inspection of the factory 3 3.4Evaluation of certification results and approval of certification 3 3.5Follow-up inspection 3 4. General requirements for certification 3 4.1Application for certification 3 4.2 Type testing 4 4.3 Initial inspection of the factory 5 4.4 Evaluation of certification results and approval of certification 6 4.5 Follow-up inspection 6 5. Certificate 8 5.1 Maintenance of the Certificate 8 5.2 Extension of certified products 8 5.3 Suspension, cancellation and withdrawal of the certificates 9 6. Use of compulsory product certification mark 9 6.1 Design of the mark allowed to use 9 6.2 Derivations of certification mark 9 6.3 Ways of use 10 6.4 Location of the mark 10 7. Charge 10 Appendix 1 10 IMPLEMENTATION RULES FOR COMPULSORY CERTIFICATION OF ELECTRICIAL AND ELECTRONIC PRODUCTS Low-voltage switchgear assembly 1. Scopes This document applies to the low-voltage switchgear and controlgear assemblies covered by GB 7251 series of standard, including busbar trunking system, distribution board, assemblies for construction sites and cable distribution cabinets (CDCs) for power distribution in networks. 2. Certification model Type testing + Initial inspection of the factory + Follow-up inspection 3. Major processes for certification 3.1Application for certification 3.2Type testing 3.3Initial inspection of the factory 3.4Evaluation of certification results and approval of certification 3.5Follow-up inspection 4. General requirements for certification 4.1Application for certification 4.1.1 Defining application unit for certification In principle, products of the same kind and manufactured in the same factory shall be defined into the application units according to their rated current and short-time withstand current. Products from different manufacturing premises should be in different applicant units. 4.1.2 Application documents The formal application form shall be submitted with the following documents: 1) Product assembly chart, circuit diagram(if applicable); 2) List of critical components and/or materials 3) Description of the difference between the different model/type of products in the same application unit. 4) Other necessary documents. 4.2 Type testing 4.2.1 Sample delivery for type testing 4.2.1.1 The principle of sample delivery for type testing Specifications and quantity of samples for type testing are based on the regulations in the test rules of the national standard. 4.2.1.2 Ways of sample delivery Samples for type testing are to be delivered by the applicant according to the requirements of the certification body and the applicant shall be responsible for the samples. The quantity requirements are as following: |Low-voltage switchgear assembly (according to |1 cabinet for each| |different functions and construction) | | |Busway |3 sections with a | | |total length of 6 | | |cm | |Standard pieces of insulated materials of |2 pieces for each | |various kinds | | 4.2.1.3 Handle of samples and related documents after type testing The samples tested and/or the relating documents should be handled in appropriate ways after type testing. 4.2.2 Test standards, items and methods for type testing 4.2.2.1 Test standards GB7251.1-1997 Low-voltage switchgear and controlgear assemblies part 1: Type-tested and partially type-tested assemblies GB7251.2-1997 Low-voltage switchgear and controlgear assemblies part 2: Particular requirements for busbar trunking systems(busways) GB7251.3-1997 Low-voltage switchgear and controlgear assemblies part 3: particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use----distribution boards GB7251.4-1998 Low-voltage switchgear and controlgear assemblies part 4: particular requirements for assemblies for construction sites GB7251.5-1998 Low-voltage switchgear and controlgear assemblies part 5: particular requirements for assemblies intended to be installed outdoors in public places----cable distribution cabinets (CDCs) for power distribution in networks. 2. Test Items Test items are all the applicable items prescribed in the safe standards of the product. 4.2.2.3 Test Methods Test is undertaken according to the requirements of relevant national standards as well as the test methods and/or standards quoted in them. 4.3 Initial inspection of the factory 4.3.1 Contents of the inspection The contents of factory inspection shall include the factory quality assurance ability assessment and the products consistency check. 4.3.1.1 Assessment of factory quality assurance ability. The inspector assigned by the certification body shall carry out the factory quality assurance capability assessment according to the Requirements for Factory Quality Assurance Ability (see appendix 1) and the additional inspection requirements stipulated by CNCA. 4.3.1.2 Check of consistency of the product The consistency of the product applying for certification shall be checked on the site of production. If more than one application unit are involved in the certification, at least one type/model sample shall be taken from each unit for the product consistency check. The following major points shall be checked: 1) The nameplate and mark of the certified product shall be identical with those indicated in the type testing reports. 2) The construction of product to be certified (mainly construction in terms of safety performance) shall be identical with those of the samples for type testing. 3) The critical components in terms of safety shall be identical with those declared in type testing and confirmed by certification body. The witness test on site, if necessary, should be carried out to confirm safety performance of the product during the factory inspection. 3. All the process sites, e.g. the factories of the product applying for certification shall be inspected for the factory quality assurance capability and the consistency of the products. 4.3.2 Timing of factory inspection Normally, the initial inspection should be implemented after the sample has passed the type testing. The type testing and factory inspection can be implemented at the same time in special cases. The duration of factory inspection shall be determined by the amounts of application units of products to be certified and with the consideration of the scale of the factory. It will normally take about 1 to 5 man-day for each processing premises. 4.4 Evaluation of certification results and approval of certification 4.4.1 Evaluation of certification results and approval of certification The certification body shall be responsible for a general evaluation of the results of type testing and factory inspection and for issuing the certificates to the applicants for the conformed products. One certificate shall be issued for one application unit. The application of the certificates shall comply with the requirements for Regulations for Compulsory Product Certification. 4.4.2 Time frame Time frame for certification means the working days from the acceptance of complete application till the issuance of the certificates, which includes the time of type testing, factory inspection, reports submission after inspection, evaluation of certification results and approval of certificates, etc. Normally, type testing takes 30 working days, the time for the manufactory to take corrective actions and that of the retest of the non-conformity item(s) excluded. The inspection reports should be submitted within 5 working days after the inspection. It will be counted from the day when the inspectors complete the inspection and receive from the factory the corrective action reports on non-conformities satisfying the requirements. Evaluating certification results and approving the certificates shall normally be completed within 5 working days. 4.5 Follow-up inspection 4.5.1 The frequency of follow-up inspection 4.5.1.1 The follow-up inspection shall normally be implemented at least once per year. The first follow-up inspection shall normally be implemented 12 months after the certificate being granted. 4.5.1.2 The frequency of inspection should be increased in any of the following cases: 1) The certified product has serious quality problem, or is complained by clients, which has been verified to be the responsibility of the certificate holder. 2) The certification body doubts the conformity of the certified product against the requirements of safety standards with sufficient reasons. 3) Sufficient information indicates that the conformity or the consistency of certified products might be affected due to the changes in organization structure, production condition and the quality system of the manufacturer and/or factories. 2. Contents of the follow-up inspection The model of follow-up inspection: re-assessment of factory quality assurance ability + check of consistency of products certified, and if necessary, samples...
010-低?撼商譭nglish(doc)